Electric heater.



E. N. BROWN.

ELECTRIC HEATER.

APPLICATION FILED JULY 10.1911.

1,245,084. Patented Oct. 30, 1917.

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UNITED STATES PATENT EDMUND N. BR O\VN, OF SAN FRANCISCO, CALIFORNIA. ASSIGNOR TO MAJESTIC ELECTBIC DEVELOPMENT COMPANY A CORBORATION OI C. LIFOBNIA.

ELECTRIC HEATER.

To all whom it may concern:

Be it known that I, Emwxn N. Bnowx,

- a citizen of the United'Strtes, residing at San Francisco, in the county of San Fran- ,cisco and State of California, have invented certam new and useful Improvements in elevation thereof partly in section Fi 3,

4, 5 and 6am detail views of certain o the parts hereinafter described.

The radiator comprises a concave-convex reflector 1, 'havin a. highly olished inner surface, and whic is secure by screws or in. other suitable manner to an outer casing 3, mounted on a base 4. The heating unit consists of a'resistange coil 6, wound upon a refractory tubular core. or bobbin 7, supported in any suitable manner in spaced relation :with the reflector 1, and'preferably 'clampin ards from the metalreflector 1' and to at the focus of: its curved surface. I prefer to support the heating uni}. by securing the terminals of theresistanoe coil 6, together with; reinforcin wires 8, wound around the ends of'the bob in if desired, to the sta'ndards 9, the ends of the wires being held by screws 10.

In or or to thoroughly insulate the standrigidly secure them thereto,- the margin of the aperture in the reflector. may be flan ed or struck up into an annular boss 12. Mica washers or other insulating disks 14, insulate the bolt 15, and center it inthe aperture cavo-convEr --reflec r,3 heating unit sup-- ported at distant lly k focus of said mepassing through the reflector plate. The bolt passes through a hole in the angle plate onstandard 9 and is threaded-through a threaded hole in thc'contact washer '16.

-The metal washer 16 is preferably oblon'g andthe ends are bent up to form retaining fingers-to confine the end of the conductor so that it may not Contact wit the metal re-- Specification of Letters Patent.

Application, filed July 10,

plate 1 and the casin protecting members, but one.

Patented Oct. 30. 1917.

1917. Serial No. 179,732;

flector or adjacent objects. The conductors or lead wires 18 pass through an insulating bushing 20 in the outer casing, the terminals being clamped between the nuts 17 and the contact washcrs 16.

The air-space. 5, between the reflector 3 prevents. the latter from becoming heate r In order to prevent the outer ex osed ed e of the heater from being. heate I provide the casing with a marginal annular flange 3' The guard wires 23, forming a rotective' cage over the/reflector are clainpe at their converging endsbetween disks or plates 24, and at their outer ends are riveted into a ring 25 which fits snu ly within the marginal flange of the anmilar portion 3. The guard cage is hinged by bending two of the up er guard wires into eyes or loops 26, an

wires into a in 27, to pass through alined passing them through holes in the The cage may be fastened in closed position by bending the end of one of the holes 28' in t e ring and flange, the parts thus' constituting a spring'catch.

It will be evident that various changes and-modifications can be made without departing from my invention.

1. An electric heater, comprising a concave-convex reflector, a heating unit supported at subst-antially'the focus of said reflector, an annular member extendin outwardly fromthe margin of said re e'ctor,

and a-protective cage having guard wires' arched between opposite sides of said annular member. l '2. An electric heater, comprising-a concavo convex reflector, a heating unit sup flector, a concaveonve casing extendin .ov'er the convex 'side of. said reflector an spaced therefrom except at the margins, said casing having an annular portion extending outwardly from the margin of said reflector, and a protective cage having guard Wire's arched between opposiifie sides of said annular portion.

electric heater; co mpiising a concev'ocgnve x netal reflector, g heating unit in spaced relation thereto, said reflector being prpvided with apertures having their margins bent to form flanges, insulating means upon either side of said flanges, and connecting devices extending through said insulating means and connected to the terminals of said heating unit.

In testimony whereof I aliix my signature.

EDMUND N. BROW'N. 

